Hi there! today I will teach you about sistoms.
Sistoms are...Hey you in the back pay atention hey don't back sass me. Well like I was saying sistyems are a lot of small things to make a werking system take for example the food chane
If a peditory animal dies out the thing it preys on will over populate.
so you see like I sayed earlier a system is little things working to gether to for one system.